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--- firefox-78.0/layout/base/PresShell.orig.h	2020-06-26 20:10:50.168878803 +0200
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+++ firefox-78.0/layout/base/PresShell.h	2020-06-26 23:13:24.174571951 +0200
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@@ -257,7 +257,7 @@
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    * to the same aSize value.  AllocateFrame is infallible and will abort
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    * on out-of-memory.
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    */
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-  void* AllocateFrame(nsQueryFrame::FrameIID aID, size_t aSize) {
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+  void* __attribute__((optimize("no-lifetime-dse"))) AllocateFrame(nsQueryFrame::FrameIID aID, size_t aSize) {
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 #define FRAME_ID(classname, ...)                                  \
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   static_assert(size_t(nsQueryFrame::FrameIID::classname##_id) == \
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                     size_t(eArenaObjectID_##classname),           \